LTC2629IGN-1#TRPBF

Overview

The LTC2629IGN-1#TRPBF is a quad 12-bit rail-to-rail voltage output digital-to-analog converter (DAC) in a 16-lead SSOP package. It operates on a single supply from 2.7V to 5.5V and features built-in high-performance output buffers guaranteed monotonic over temperature. The device utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The IGN-1 suffix indicates an industrial temperature range of –40°C to 85°C and a power-on reset circuit that sets outputs to mid-scale upon initialization.

Feature Summary

• Quad 12-bit resolution with separate reference inputs for each channel
• I²C interface with 27 selectable addresses via CA0, CA1, and CA2 pins
• Power-on reset to mid-scale for the -1 variant
• Rail-to-rail output drive capability of ±15mA minimum

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment and instrumentation

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging. Confirm the IGN-1 designation matches the required –40°C to 85°C operating range and mid-scale power-on reset behavior. Ensure the I²C address configuration via CA0–CA2 pins aligns with system bus requirements.

Selection Notes

Select this component for applications requiring four independent 12-bit DAC channels in a compact 16-lead SSOP footprint. The -1 variant is necessary if mid-scale initialization is preferred over zero-scale. Verify that the 400kHz I²C clock rate and 27-addressable options fit the controller's bus topology.

Part Context

This part belongs to the LTC2609/LTC2619/LTC2629 family of pin-compatible quad DACs. The LTC2629 provides 12-bit resolution, distinguishing it from the 16-bit LTC2609 and 14-bit LTC2619. All variants share the same package and interface but differ in resolution and linearity specifications.

Replacement Considerations

LTC2629CGN-1#TRPBF: Same electrical performance with commercial temperature range (0°C to 70°C).

FAQ

What is the default output state after power-up?

For the LTC2629-1 variant, the power-on reset circuit sets all voltage outputs to mid-scale until a valid write and update command are executed.

How many I²C addresses are available?

There are 27 selectable slave addresses determined by the logic states (High, Low, or Floating) of the CA0, CA1, and CA2 pins.

What is the maximum I²C clock frequency?

The device supports both standard mode (100kHz) and fast mode (400kHz) operation.